New England Aquarium
Conveniently located on Boston’s waterfront, the New England Aquarium features more than 20,000 animals of 600 different species.
http://www.neaq.org/index.php
Boston Duck Tour
"One big splash and the rest is history!" This fully narrated historic tour takes place in authentic WWI amphibious vehicles through the streets of Boston and into the Charles River.
http://www.bostonducktours.com/
Boston Children’s Museum
Boston Children’s Museum’s exhibits and programs emphasize hands-on engagement and learning through experience, employing play as a tool to spark the inherent creativity, curiosity, and imagination of children.
http://www.bostonchildrensmuseum.org/
Museum of Science
The Science Museum is a world-renowned educational institution with over 400 interactive participatory exhibits featuring live animal and physical science demonstrations, courses, traveling exhibits, a computer center, the Mugar Omni Theater, and Charles Hayden Planetarium.
http://www.mos.org/
Freedom Trail
Boston's Freedom Trail is a red (mostly brick) path through downtown Boston which leads to sixteen significant historical sites. The 2.5 mile (4 km) walk from the Boston Common to the Bunker Hill Monument in Charlestown is popular with tourists. Part of the Freedom Trail overlaps with the much longer Boston Harbor Walk. The Freedom Trail is a unit of Boston National Historical Parks.
http://www.thefreedomtrail.org/